From: <patrice.chotard@st.com>
To: Russell King <linux@armlinux.org.uk>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <soc@kernel.org>
Cc: Alain Volmat <alain.volmat@st.com>, patrice.chotard@st.com
Subject: [PATCH] Revert "ARM: sti: Implement dummy L2 cache's write_sec"
Date: Thu, 18 Jun 2020 19:24:56 +0200
Message-ID: <20200618172456.29475-1-patrice.chotard@st.com> (raw)
From: Patrice Chotard <patrice.chotard@st.com>
This reverts commit 7b8e0188fa717cd9abc4fb52587445b421835c2a.
Initially, STiH410-B2260 was supposed to be secured, that's why
l2c_write_sec was stubbed to avoid secure register access from
non secure world.
But by default, STiH410-B2260 is running in non secure mode,
so L2 cache register accesses are authorized, l2c_write_sec stub
is not needed.
With this patch, L2 cache is configured and performance are enhanced.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Cc: Alain Volmat <alain.volmat@st.com>
---
arch/arm/mach-sti/board-dt.c | 9 ---------
1 file changed, 9 deletions(-)
diff --git a/arch/arm/mach-sti/board-dt.c b/arch/arm/mach-sti/board-dt.c
index dcb98937fcf5..ffecbf29646f 100644
--- a/arch/arm/mach-sti/board-dt.c
+++ b/arch/arm/mach-sti/board-dt.c
@@ -20,14 +20,6 @@ static const char *const stih41x_dt_match[] __initconst = {
NULL
};
-static void sti_l2_write_sec(unsigned long val, unsigned reg)
-{
- /*
- * We can't write to secure registers as we are in non-secure
- * mode, until we have some SMI service available.
- */
-}
-
DT_MACHINE_START(STM, "STi SoC with Flattened Device Tree")
.dt_compat = stih41x_dt_match,
.l2c_aux_val = L2C_AUX_CTRL_SHARED_OVERRIDE |
@@ -36,5 +28,4 @@ DT_MACHINE_START(STM, "STi SoC with Flattened Device Tree")
L2C_AUX_CTRL_WAY_SIZE(4),
.l2c_aux_mask = 0xc0000fff,
.smp = smp_ops(sti_smp_ops),
- .l2c_write_sec = sti_l2_write_sec,
MACHINE_END
--
2.17.1
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